CN114396647B - Method and equipment for adjusting hydraulic balance of heat supply two networks - Google Patents
Method and equipment for adjusting hydraulic balance of heat supply two networks Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/042—Temperature sensors
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Abstract
The invention provides a hydraulic balance adjusting method and equipment for a heat supply two-network. The method comprises the following steps: constructing a first pipe network resistance distribution model; collecting user side building control system data and room temperature, sending the data to a centralized control cloud platform, and obtaining flow distribution of a second network after calculation to obtain a second network resistance distribution model; carrying out first building control adjustment on water conservancy balance by adopting a second pipe network resistance distribution model until the adjustable branch of the valve meets the target flow range, and carrying out second building control adjustment on the water conservancy balance according to heat supply quantity until the heat quantity reaches balance; and adjusting the secondary side branch valve, the secondary side circulating pump frequency and the total valve according to the flow ratio until the secondary side flow reaches hydraulic balance, and adjusting the opening of the valve according to the heat supply quantity and the indoor temperature to realize energy saving and consumption reduction of the secondary network. The invention realizes more accurate balance control of the heat supply two networks and has higher accuracy.
Description
Technical Field
The embodiment of the invention relates to the technical field of heating network, in particular to a method and equipment for adjusting hydraulic balance of a heating two-network.
Background
In the current regulation mode of the balance of the two networks (namely a main pipe network and a secondary pipe network) of the heating system, a temperature control balance valve is widely adopted for carrying out hydraulic balance regulation of the two networks, the temperature control balance valve regulation is a regulation mode taking backwater temperature as a regulation reference, backwater temperature and indoor heating temperature are positively correlated, but have a clear numerical corresponding relation for each building, the balance control is rough, the indoor heating temperatures of different users cannot be realized to be consistent, and the heating standards are all reached. Therefore, developing a method and a device for adjusting hydraulic balance of two heat supply networks can effectively overcome the defects in the related art, and the method and the device are the technical problems to be solved in the industry.
Disclosure of Invention
Aiming at the problems existing in the prior art, the embodiment of the invention provides a method and equipment for adjusting hydraulic balance of a heat supply two-network.
In a first aspect, an embodiment of the present invention provides a method for adjusting hydraulic balance of a two-network for heating, including: constructing a pipe network topology model according to basic information of the two-network pipe network, and constructing a first pipe network resistance distribution model according to the pipe network topology model; collecting user side building control system data and room temperature, sending the data to a centralized control cloud platform, obtaining flow distribution of a second network after calculation, and correcting a first pipe network resistance distribution model by adopting the flow distribution of the second network to obtain a second pipe network resistance distribution model; carrying out first building control adjustment on the hydraulic balance by adopting a second pipe network resistance distribution model until the adjustable branch of the valve meets the target flow range, and carrying out second building control adjustment on the hydraulic balance according to the heat supply quantity until the heat quantity reaches balance; and adjusting the secondary side branch valve, the secondary side circulating pump frequency and the total valve according to the flow ratio until the secondary side flow reaches hydraulic balance, and adjusting the opening of the valve according to the heat supply quantity and the indoor temperature to realize energy saving and consumption reduction of the secondary network.
Based on the content of the embodiment of the method, the method for adjusting the hydraulic balance of the two networks for heat supply provided by the embodiment of the invention comprises the following steps: pipeline diameter, length, branches, nodes, valves, pipe fittings and heat preservation; the pipe network topology model comprises: each node, pipe section and heat user abstract loop system of pipe network.
Based on the content of the embodiment of the method, the method for adjusting the hydraulic balance of the two networks for heat supply provided by the embodiment of the invention acquires the data of the building control system at the user side, and comprises the following steps: the temperature supply, the temperature return, the pressure supply, the back pressure and the valve opening of the user side building control system.
On the basis of the foregoing method embodiment, the method for adjusting hydraulic balance of a heating two-network provided in the embodiment of the present invention, wherein the first building control adjustment is performed on hydraulic balance by using a second pipe network resistance distribution model until an adjustable branch of a valve meets a target flow range, includes: reading parameters of building control pressure and water supply flow of the heat exchange station from a database in real time, inputting a second pipe network resistance distribution model to obtain flow distribution of a pipe network, and obtaining a ratio of actual flow to target flow; according to the extracted minimum flow ratio, maximum flow ratio and the flow ratio of the least adverse user obtained by hydraulic analysis, the valve is adjusted for the first time; and recording the secondary side heating parameters and the secondary side circulating pump operation parameters in the station, and performing secondary adjustment on the valve until the adjustable branch of the valve meets the target flow range.
Based on the foregoing method embodiment, the method for adjusting hydraulic balance of a heating two-network according to the embodiment of the present invention performs a second building control adjustment on hydraulic balance according to heating capacity until the heating capacity reaches the balance, including: and measuring the return water temperature of each building control valve, calculating the supply return water temperature difference of each building control valve according to the return water temperature, calculating the temperature difference ratio of the supply return water temperature difference to the total supply return water, calculating the product of the flow ratio and the temperature difference ratio, and adjusting the building control valves according to the product and the indoor temperature until the heat quantity reaches balance.
Based on the foregoing method embodiment, the method for adjusting hydraulic balance of a heating two-network according to the embodiment of the present invention includes: if the minimum flow ratio deviates from the target value, checking whether the corresponding valve opening is opened to the maximum, and if not, adjusting the valve opening to be hundred percent full opening; if the valve opening is maximum, checking whether the valve opening corresponding to the flow ratio of the least adverse user is maximum, and adjusting the valve opening to be hundred percent full opening if the valve opening is not maximum; and if the valve opening is the largest and corresponds to the flow ratio of the least adverse user, keeping the valve fully open, and adjusting the secondary network circulating pump until the flow ratio is reduced to the target value.
In a second aspect, an embodiment of the present invention provides a hydraulic balance adjustment system for a two-network for heating, including: the building control balance valves are used for adjusting valve, pressure supply, back pressure, temperature supply, temperature return and opening measuring point values and sending the opening measuring point values to the data acquisition box; the data acquisition box is used for acquiring building control information, sending the building control information to the heat supply network centralized control cloud platform and receiving data of the heat supply network centralized control cloud platform; the heat exchange station and the DCS system are used for adjusting the water supply temperature through the primary side temperature adjusting valve and adjusting the water supply flow through the variable frequency circulating pump, and the DCS and the heat supply network centralized control cloud platform are in wireless transmission communication and can transmit measurement point feedback and receive adjustment instructions of the heat supply network centralized control cloud platform to the variable frequency circulating water pump and the primary side temperature adjusting valve; the room temperature collector is used for collecting room temperature information of each building and uploading the room temperature information to the heat supply network centralized control cloud platform through wireless transmission; the heat supply network centralized control cloud platform is used for realizing the heat supply two-network hydraulic balance adjustment method according to any one of the method embodiments.
In a third aspect, an embodiment of the present invention provides a hydraulic balance adjustment device for a two-network for heating, including: the first main module is used for constructing a pipe network topology model according to the basic information of the two-network pipe network and constructing a first pipe network resistance distribution model according to the pipe network topology model; the second main module is used for acquiring user side building control system data and room temperature, sending the data and the room temperature to the centralized control cloud platform, obtaining flow distribution of a second network after calculation, and correcting a first pipe network resistance distribution model by adopting the flow distribution of the second network to obtain a second pipe network resistance distribution model; the third main module is used for carrying out first building control adjustment on the hydraulic balance by adopting a second pipe network resistance distribution model until the adjustable branch of the valve meets the target flow range, and carrying out second building control adjustment on the hydraulic balance according to the heat supply quantity until the heat quantity reaches balance; and the fourth main module is used for adjusting the secondary side branch valve, the secondary side circulating pump frequency and the total valve according to the flow ratio until the secondary side flow reaches hydraulic balance, and adjusting the valve opening according to the heat supply quantity and the indoor temperature so as to realize energy saving and consumption reduction of the secondary network.
In a fourth aspect, an embodiment of the present invention provides an electronic device, including:
at least one processor; and
at least one memory communicatively coupled to the processor, wherein:
the memory stores program instructions executable by the processor, the processor invoking the program instructions capable of executing the heating two-network hydraulic balance adjustment method provided by any of the various implementations of the first aspect.
In a fifth aspect, embodiments of the present invention provide a non-transitory computer-readable storage medium storing computer instructions that cause a computer to perform a method for adjusting hydraulic balance of a heating two-network provided by any one of the various implementations of the first aspect.
According to the hydraulic balance adjusting method and the hydraulic balance adjusting device for the heat supply two networks, provided by the embodiment of the invention, through comprehensively considering the information such as the temperature of the water supply and return, the flow, the indoor temperature and the like, a mode of combining coarse adjustment and fine adjustment is adopted to realize more accurate balance control of the heat supply two networks, and compared with a traditional water return temperature method, the method has the advantages that the considered factors are more complete and comprehensive, and the indoor heating temperature is used as a final target, so that the comprehensive adjusting method has higher accuracy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without any inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a hydraulic balance adjustment method for a heat supply two-network provided by an embodiment of the invention;
fig. 2 is a schematic structural diagram of a hydraulic balance adjusting device for a heat supply two-network according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an entity structure of an electronic device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a hydraulic balance adjustment system for a heat supply two-network according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. In addition, the technical features of each embodiment or the single embodiment provided by the invention can be combined with each other at will to form a feasible technical scheme, and the combination is not limited by the sequence of steps and/or the structural composition mode, but is necessarily based on the fact that a person of ordinary skill in the art can realize the combination, and when the technical scheme is contradictory or can not realize, the combination of the technical scheme is not considered to exist and is not within the protection scope of the invention claimed.
The embodiment of the invention provides a hydraulic balance adjusting method for a heat supply two-network, which is shown in fig. 1, and comprises the following steps: constructing a pipe network topology model according to basic information of the two-network pipe network, and constructing a first pipe network resistance distribution model according to the pipe network topology model; collecting user side building control system data and room temperature, sending the data to a centralized control cloud platform, obtaining flow distribution of a second network after calculation, and correcting a first pipe network resistance distribution model by adopting the flow distribution of the second network to obtain a second pipe network resistance distribution model; carrying out first building control adjustment on the hydraulic balance by adopting a second pipe network resistance distribution model until the adjustable branch of the valve meets the target flow range, and carrying out second building control adjustment on the hydraulic balance according to the heat supply quantity until the heat quantity reaches balance; and adjusting the secondary side branch valve, the secondary side circulating pump frequency and the total valve according to the flow ratio until the secondary side flow reaches hydraulic balance, and adjusting the opening of the valve according to the heat supply quantity and the indoor temperature to realize energy saving and consumption reduction of the secondary network.
Based on the foregoing disclosure of the foregoing method embodiment, as an optional embodiment, the method for adjusting hydraulic balance of a two-network heating system provided in the embodiment of the present invention, where the basic information of the two-network includes: pipeline diameter, length, branches, nodes, valves, pipe fittings and heat preservation; the pipe network topology model comprises: each node, pipe section and heat user abstract loop system of pipe network.
Specifically, basic information of a two-network pipe network is collected, including pipeline diameter, length, branches, nodes, valves, pipe fittings, heat preservation and the like, a topological structure of the pipe network is established, the topological structure of the pipe network is an abstract loop system comprising all nodes, pipe sections and heat users of the pipe network, and the data are input into a database to establish a pipe network resistance distribution model.
Based on the foregoing disclosure of the foregoing method embodiment, as an optional embodiment, the method for adjusting hydraulic balance of a heating two-network provided in the embodiment of the present invention, where the collecting data of a building control system on a user side includes: the temperature supply, the temperature return, the pressure supply, the back pressure and the valve opening of the user side building control system.
Specifically, the temperature return, the pressure supply, the back pressure and the valve opening of the user side building control system are provided. And (3) installing temperature measuring points indoors, collecting the room temperature, and inputting the room temperature into a centralized control cloud platform database. And analyzing the temperature supply, temperature return, pressure supply, back pressure, valve opening and indoor temperature data acquired by the user side to obtain the flow distribution condition of the two networks, so as to be used for correcting the resistance condition of each section of pipeline of the pipeline network topological structure model, and if necessary, adopting a method for measuring the flow in a field non-invasive way to obtain more branch flow values so as to correct the resistance distribution model.
Based on the foregoing disclosure of the method embodiment, as an optional embodiment, the method for adjusting hydraulic balance of a heating two-network provided in the embodiment of the present invention, which uses a second network resistance distribution model to perform a first building control adjustment on hydraulic balance until an adjustable branch of a valve meets a target flow range, includes: reading parameters of building control pressure and water supply flow of the heat exchange station from a database in real time, inputting a second pipe network resistance distribution model to obtain flow distribution of a pipe network, and obtaining a ratio of actual flow to target flow; according to the extracted minimum flow ratio, maximum flow ratio and the flow ratio of the least adverse user obtained by hydraulic analysis, the valve is adjusted for the first time; and recording the secondary side heating parameters and the secondary side circulating pump operation parameters in the station, and performing secondary adjustment on the valve until the adjustable branch of the valve meets the target flow range.
Specifically, parameters of building control pressure and water supply flow of the heat exchange station are read from a database in real time, a pipe network resistance distribution model is input, flow distribution of the pipe network is obtained, and the ratio of actual flow to target flow (design) is calculated. Finding out the minimum flow ratio (including parallel minimum) and the maximum flow ratio (including parallel maximum); meanwhile, the flow ratio corresponding to the least user obtained by hydraulic analysis is found out; and judging whether the flow ratio deviates from the target value. If the minimum value deviates from the target value, checking whether the corresponding valve opening is opened to the maximum, and if not, adjusting the valve opening to be: 100% full open. If the valve corresponding to the minimum flow ratio is already fully opened (or the valve does not have the capacity of adjusting for various reasons), record is made. Checking whether the valve opening corresponding to the flow ratio of the least unfavorable user is opened to the maximum, and adjusting the valve opening to be the maximum is as follows: 100% full open. If the adjustment capability is not available for various reasons, recording is performed. If the maximum value appears at the most unfavorable position, the valve is kept fully opened, the secondary network circulating pump is adjusted until the flow ratio is reduced to the target value, and the next step is carried out. If the maximum value appears in other branches and is bigger, the opening degree of the valve is reduced. A full-open valve is not required, and the corresponding single adjustment amplitude can be referred to in table 1. After the corresponding valve is adjusted once, 2 hours later, the flow of each branch is taken, and the flow ratio is calculated and used as the initial value of the second adjustment.
TABLE 1
Note that: the opening of the lower valve is the opening before the next adjustment (or after the last adjustment) and is not always equal to the initial opening.
After the primary adjustment is completed, the secondary side heating parameters (flow, temperature and pressure) and the secondary side circulating pump operation parameters (frequency, voltage and current and the pressure of the inlet and the outlet of the circulating pump) in the station are recorded. Note whether there is a significant difference in the data feedback of the total flow of the secondary side in the station, the pressure before and after the water pump, etc. Before the next adjustment (i.e. more than 2 hours from the last adjustment interval), whether the end user complains about the condition of bursting and cooling or not is confirmed, if the indoor temperature reaches the standard, at this time, the in-station water pump is not required to be adjusted first, and the process goes to the step 4. If the valve of the branch with the minimum flow ratio is fully opened, the flow ratio of the branch is still minimum and smaller than 0.9, the frequency of the two-network-side circulating pump in the heat exchange station needs to be increased until the minimum flow ratio reaches the target lower limit value of 0.9 or the frequency of the water pump is adjusted to be maximum. And entering the next round of valve adjusting cycle. Until the valve adjustable branch meets the target flow range. Checking, and adjusting the variable-frequency water pump in the station according to the adjustment conditions. The first floor control adjustment is ended.
Based on the foregoing disclosure of the foregoing method embodiment, as an optional embodiment, the method for adjusting hydraulic balance of a two-network for heating provided in the embodiment of the present invention, where the second building adjustment is performed on hydraulic balance according to heat supply amount until heat reaches balance, includes: and measuring the return water temperature of each building control valve, calculating the supply return water temperature difference of each building control valve according to the return water temperature, calculating the temperature difference ratio of the supply return water temperature difference to the total supply return water, calculating the product of the flow ratio and the temperature difference ratio, and adjusting the building control valves according to the product and the indoor temperature until the heat quantity reaches balance.
Specifically, the second building control adjustment is balanced according to the heat supply amount: measuring backwater temperature T of each building control valve rc The unit is degrees centigrade; the temperature difference of the water supply and return of each building control valve is calculated, and the unit is the temperature: delta T c ＝T-T rc Wherein T is branch water supply temperature, and the unit is the temperature; calculating the ratio of the temperature difference of the water supply and return to the temperature difference of the total water supply and returnDimensionless, ->In the formula DeltaT c The temperature difference of two-net water supply and return corresponding to each valve is measured in degrees centigrade. Delta T 2 The temperature difference of the total water supply and return of two nets in the station is expressed in degrees centigrade. Calculating the product W of the flow ratio and the temperature difference ratio of the rough adjustment final state: />In the method, in the process of the invention,is the flow ratio; delta->Is the temperature difference ratio; judging the value of W: w is more than 1, which indicates that the actual heat dissipation capacity of the user is larger than the assumed required value; w=1, indicating that the user's actual heat dissipation capacity is approximately equal to the hypothetical demand value; w is less than 1, which indicates that the actual heat dissipation capacity of the user is lower than the assumed requirementEvaluating; the actual heat dissipation capacity is larger or smaller than the insufficient heat supply value; whether the heat is excessively supplied or not is determined by the indoor temperature; at this time, the user room temperature corresponding to each branch is required to be condition 2. If conditions 1 and 2 are satisfied simultaneously (as shown in table 2), fine tuning of the pilot operated valve is performed.
TABLE 2
Note that: are fine-tuned with small amplitude.
And measuring the backwater temperature again after 2-3 hours, and checking the indoor temperature in a sampling way. And (3) calibrating and fine-tuning for several times until the heat quantity basically reaches balance (the difference between the W value and the indoor temperature is reduced, and the room temperature is 18-22 ℃), thus finishing the second building control adjustment.
Based on the foregoing disclosure of the method embodiment, as an optional embodiment, the method for adjusting hydraulic balance of a heating two-network according to the embodiment of the present invention includes: if the minimum flow ratio deviates from the target value, checking whether the corresponding valve opening is opened to the maximum, and if not, adjusting the valve opening to be hundred percent full opening; if the valve opening is maximum, checking whether the valve opening corresponding to the flow ratio of the least adverse user is maximum, and adjusting the valve opening to be hundred percent full opening if the valve opening is not maximum; and if the valve opening is the largest and corresponds to the flow ratio of the least adverse user, keeping the valve fully open, and adjusting the secondary network circulating pump until the flow ratio is reduced to the target value.
And then, performing in-station coarse adjustment, and adjusting the secondary side branch valve, the secondary side circulating pump frequency and the total valve according to the flow ratio so as to achieve secondary side flow redistribution (hydraulic balance). When the station is roughly regulated, the condition judgment of regulating the secondary side circulating water pump is shown in table 3:
TABLE 3 Table 3
Continuously performing in-station fine adjustment, and performing fine adjustment on the opening of the valve according to the heat supply quantity and the indoor temperature; meanwhile, if the following conditions are met, the primary side flow rate needs to be adjusted, so that the quality adjustment of the two networks is realized, and energy conservation and consumption reduction are further realized. After the fine-tuning of the two-net valve, the condition judgment for tuning the primary side temperature-tuning valve is shown in table 4:
TABLE 4 Table 4
According to the hydraulic balance adjusting method for the heat supply two-network, provided by the embodiment of the invention, through comprehensively considering the information such as the temperature, the flow and the indoor temperature of the water supply and return, the more accurate balance control of the heat supply two-network is realized by adopting a mode of combining coarse adjustment and fine adjustment, and compared with the traditional water return temperature method, the method has the advantages that the considered factors are more complete and comprehensive, and the indoor heating temperature is taken as a final target, so that the comprehensive adjusting method has higher accuracy.
The embodiment of the invention provides a hydraulic balance adjusting system for a heat supply two-network, which is shown in fig. 4, and comprises the following components: the building control balance valves are used for adjusting valve, pressure supply, back pressure, temperature supply, temperature return and opening measuring point values and sending the opening measuring point values to the data acquisition box; the data acquisition box is used for acquiring building control information, sending the building control information to the heat supply network centralized control cloud platform and receiving data of the heat supply network centralized control cloud platform; the heat exchange station and the DCS system are used for adjusting the water supply temperature through the primary side temperature adjusting valve and adjusting the water supply flow through the variable frequency circulating pump, and the DCS and the heat supply network centralized control cloud platform are in wireless transmission communication and can transmit measurement point feedback and receive adjustment instructions of the heat supply network centralized control cloud platform to the variable frequency circulating water pump and the primary side temperature adjusting valve; the room temperature collector is used for collecting room temperature information of each building and uploading the room temperature information to the heat supply network centralized control cloud platform through wireless transmission; the heat supply network centralized control cloud platform is used for realizing the heat supply two-network hydraulic balance adjustment method according to any one of the method embodiments.
The implementation basis of the embodiments of the present invention is realized by a device with a processor function to perform programmed processing. Therefore, in engineering practice, the technical solutions and the functions of the embodiments of the present invention can be packaged into various modules. Based on this actual situation, on the basis of the above embodiments, an embodiment of the present invention provides a two-network hydraulic balance adjustment device for heat supply, which is used to execute the two-network hydraulic balance adjustment method in the above method embodiment. Referring to fig. 2, the apparatus includes: the first main module is used for constructing a pipe network topology model according to the basic information of the two-network pipe network and constructing a first pipe network resistance distribution model according to the pipe network topology model; the second main module is used for acquiring user side building control system data and room temperature, sending the data and the room temperature to the centralized control cloud platform, obtaining flow distribution of a second network after calculation, and correcting a first pipe network resistance distribution model by adopting the flow distribution of the second network to obtain a second pipe network resistance distribution model; the third main module is used for carrying out first building control adjustment on the hydraulic balance by adopting a second pipe network resistance distribution model until the adjustable branch of the valve meets the target flow range, and carrying out second building control adjustment on the hydraulic balance according to the heat supply quantity until the heat quantity reaches balance; and the fourth main module is used for adjusting the secondary side branch valve, the secondary side circulating pump frequency and the total valve according to the flow ratio until the secondary side flow reaches hydraulic balance, and adjusting the valve opening according to the heat supply quantity and the indoor temperature so as to realize energy saving and consumption reduction of the secondary network.
The hydraulic balance adjusting device for the heat supply two networks provided by the embodiment of the invention adopts a plurality of modules in fig. 2, and realizes more accurate balance control of the heat supply two networks by comprehensively considering the information of the temperature, the flow, the indoor temperature and the like of the heat supply water and adopting a mode of combining coarse adjustment and fine adjustment.
It should be noted that, the device in the device embodiment provided by the present invention may be used to implement the method in the above method embodiment, and may also be used to implement the method in other method embodiments provided by the present invention, where the difference is merely that the corresponding functional module is provided, and the principle is basically the same as that of the above device embodiment provided by the present invention, so long as a person skilled in the art refers to a specific technical solution in the above device embodiment based on the above device embodiment, and obtains a corresponding technical means by combining technical features, and a technical solution formed by these technical means, and on the premise that the technical solution is ensured to have practicability, the device in the above device embodiment may be modified, so as to obtain a corresponding device embodiment, and be used to implement the method in other method embodiment. For example:
based on the content of the embodiment of the device, as an optional embodiment, the device for adjusting hydraulic balance of a heating two-network provided in the embodiment of the invention further includes: the first sub-module is used for realizing the basic information of the two-network pipe network, and comprises: pipeline diameter, length, branches, nodes, valves, pipe fittings and heat preservation; the pipe network topology model comprises: each node, pipe section and heat user abstract loop system of pipe network.
Based on the content of the embodiment of the device, as an optional embodiment, the device for adjusting hydraulic balance of a heating two-network provided in the embodiment of the invention further includes: the second sub-module is configured to implement the collection of user side building control system data, and includes: the temperature supply, the temperature return, the pressure supply, the back pressure and the valve opening of the user side building control system.
Based on the content of the embodiment of the device, as an optional embodiment, the device for adjusting hydraulic balance of a heating two-network provided in the embodiment of the invention further includes: and a third sub-module, configured to implement the first building control adjustment of hydraulic balance using the second pipe network resistance distribution model until the adjustable branch of the valve meets the target flow range, including: reading parameters of building control pressure and water supply flow of the heat exchange station from a database in real time, inputting a second pipe network resistance distribution model to obtain flow distribution of a pipe network, and obtaining a ratio of actual flow to target flow; according to the extracted minimum flow ratio, maximum flow ratio and the flow ratio of the least adverse user obtained by hydraulic analysis, the valve is adjusted for the first time; and recording the secondary side heating parameters and the secondary side circulating pump operation parameters in the station, and performing secondary adjustment on the valve until the adjustable branch of the valve meets the target flow range.
Based on the content of the embodiment of the device, as an optional embodiment, the device for adjusting hydraulic balance of a heating two-network provided in the embodiment of the invention further includes: and a fourth sub-module for implementing the second building control adjustment of the hydraulic balance according to the heat supply amount until the heat reaches the balance, including: and measuring the return water temperature of each building control valve, calculating the supply return water temperature difference of each building control valve according to the return water temperature, calculating the temperature difference ratio of the supply return water temperature difference to the total supply return water, calculating the product of the flow ratio and the temperature difference ratio, and adjusting the building control valves according to the product and the indoor temperature until the heat quantity reaches balance.
Based on the content of the embodiment of the device, as an optional embodiment, the device for adjusting hydraulic balance of a heating two-network provided in the embodiment of the invention further includes: and a fifth sub-module, configured to implement the first adjustment of the valve according to the extracted minimum flow ratio, the extracted maximum flow ratio, and the flow ratio of the most unfavorable user obtained by hydraulic analysis, where the first adjustment includes: if the minimum flow ratio deviates from the target value, checking whether the corresponding valve opening is opened to the maximum, and if not, adjusting the valve opening to be hundred percent full opening; if the valve opening is maximum, checking whether the valve opening corresponding to the flow ratio of the least adverse user is maximum, and adjusting the valve opening to be hundred percent full opening if the valve opening is not maximum; and if the valve opening is the largest and corresponds to the flow ratio of the least adverse user, keeping the valve fully open, and adjusting the secondary network circulating pump until the flow ratio is reduced to the target value.
The method of the embodiment of the invention is realized by the electronic equipment, so that the related electronic equipment is necessary to be introduced. To this end, an embodiment of the present invention provides an electronic device, as shown in fig. 3, including: at least one processor (processor), a communication interface (Communications Interface), at least one memory (memory) and a communication bus, wherein the at least one processor, the communication interface, and the at least one memory communicate with each other via the communication bus. The at least one processor may invoke logic instructions in the at least one memory to perform all or part of the steps of the methods provided by the various method embodiments described above.
Further, the logic instructions in at least one of the memories described above may be implemented in the form of a software functional unit and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or may be implemented by hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. Based on this knowledge, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In this patent, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The hydraulic balance adjusting method for the heat supply two networks is characterized by comprising the following steps of: constructing a pipe network topology model according to basic information of the two-network pipe network, and constructing a first pipe network resistance distribution model according to the pipe network topology model; collecting user side building control system data and room temperature, sending the data to a centralized control cloud platform, obtaining flow distribution of a second network after calculation, and correcting a first pipe network resistance distribution model by adopting the flow distribution of the second network to obtain a second pipe network resistance distribution model; carrying out first building control adjustment on the hydraulic balance by adopting a second pipe network resistance distribution model until the adjustable branch of the valve meets the target flow range, and carrying out second building control adjustment on the hydraulic balance according to the heat supply quantity until the heat quantity reaches balance; adjusting the frequency of the secondary side branch valve, the frequency of the secondary side circulating pump and the total valve according to the flow ratio until the secondary side flow reaches hydraulic balance, and adjusting the opening of the valve according to the heat supply quantity and the indoor temperature to realize energy saving and consumption reduction of the secondary network;
the basic information of the two-network pipe network comprises: pipeline diameter, length, branches, nodes, valves, pipe fittings and heat preservation; the pipe network topology model comprises: each node, pipe section and heat user abstract loop system of pipe network;
the collecting the user side building control system data comprises the following steps: the temperature supply, the temperature return, the pressure supply, the back pressure and the valve opening of the user side building control system;
the first building control adjustment is carried out on the hydraulic balance by adopting the second pipe network resistance distribution model until the adjustable branch of the valve meets the target flow range, and the method comprises the following steps: reading parameters of building control pressure and water supply flow of the heat exchange station from a database in real time, inputting a second pipe network resistance distribution model to obtain flow distribution of a pipe network, and obtaining a ratio of actual flow to target flow; according to the extracted minimum flow ratio, maximum flow ratio and the flow ratio of the least adverse user obtained by hydraulic analysis, the valve is adjusted for the first time; recording a secondary side heating parameter and a secondary side circulating pump operation parameter in the station, and performing secondary adjustment on the valve until the adjustable branch of the valve meets the target flow range;
the second building control adjustment is carried out on the hydraulic balance according to the heat supply quantity until the heat quantity reaches the balance, and the method comprises the following steps: and measuring the return water temperature of each building control valve, calculating the supply return water temperature difference of each building control valve according to the return water temperature, calculating the temperature difference ratio of the supply return water temperature difference to the total supply return water, calculating the product of the flow ratio and the temperature difference ratio, and adjusting the building control valves according to the product and the indoor temperature until the heat quantity reaches balance.
2. The method for adjusting hydraulic balance of two networks for heating according to claim 1, wherein the first adjustment of the valve according to the extracted minimum flow ratio, maximum flow ratio and flow ratio of the least favorable user obtained by hydraulic analysis comprises: if the minimum flow ratio deviates from the target value, checking whether the corresponding valve opening is opened to the maximum, and if not, adjusting the valve opening to be hundred percent full opening; if the valve opening is maximum, checking whether the valve opening corresponding to the flow ratio of the least adverse user is maximum, and adjusting the valve opening to be hundred percent full opening if the valve opening is not maximum; and if the valve opening is the largest and corresponds to the flow ratio of the least adverse user, keeping the valve fully open, and adjusting the secondary network circulating pump until the flow ratio is reduced to the target value.
3. A two net hydraulic balance adjustment system of heat supply, characterized by comprising: the building control balance valves are used for adjusting valve, pressure supply, back pressure, temperature supply, temperature return and opening measuring point values and sending the opening measuring point values to the data acquisition box; the data acquisition box is used for acquiring building control information, sending the building control information to the heat supply network centralized control cloud platform and receiving data of the heat supply network centralized control cloud platform; the heat exchange station and the DCS system are used for adjusting the water supply temperature through the primary side temperature adjusting valve and adjusting the water supply flow through the variable frequency circulating pump, and the DCS and the heat supply network centralized control cloud platform are in wireless transmission communication and can transmit measurement point feedback and receive adjustment instructions of the heat supply network centralized control cloud platform to the variable frequency circulating water pump and the primary side temperature adjusting valve; the room temperature collector is used for collecting room temperature information of each building and uploading the room temperature information to the heat supply network centralized control cloud platform through wireless transmission; the heat supply network centralized control cloud platform is used for realizing the heat supply two-network hydraulic balance adjustment method according to any one of claims 1 to 2.
4. A two net hydraulic balance adjusting device of heat supply, characterized by comprising: the first main module is used for constructing a pipe network topology model according to the basic information of the two-network pipe network and constructing a first pipe network resistance distribution model according to the pipe network topology model; the second main module is used for acquiring user side building control system data and room temperature, sending the data and the room temperature to the centralized control cloud platform, obtaining flow distribution of a second network after calculation, and correcting a first pipe network resistance distribution model by adopting the flow distribution of the second network to obtain a second pipe network resistance distribution model; the third main module is used for carrying out first building control adjustment on the hydraulic balance by adopting a second pipe network resistance distribution model until the adjustable branch of the valve meets the target flow range, and carrying out second building control adjustment on the hydraulic balance according to the heat supply quantity until the heat quantity reaches balance; and the fourth main module is used for adjusting the secondary side branch valve, the secondary side circulating pump frequency and the total valve according to the flow ratio until the secondary side flow reaches hydraulic balance, and adjusting the opening of the valve according to the heat supply quantity and the indoor temperature to realize energy saving and consumption reduction of the two networks.
5. An electronic device, comprising:
at least one processor, at least one memory, and a communication interface; wherein,,
the processor, the memory and the communication interface are communicated with each other;
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1-2.
6. A non-transitory computer readable storage medium storing computer instructions that cause the computer to perform the method of any one of claims 1 to 2.
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